Mechanism for ejecting completed jackets from mandrels



5 Sheets-Sheet 1 J. CUTLER JacoZ C'uilel;

MECQ-IARQLSM FOB EJECTING COMPLETED JACKETS FROM A MANDREL Ongmal Flled July 10, 1943 July '8, 1947..

J. CUTLER I 2,423,486

MECHANISM FOR'EJECTING COMPLETED JACKETS FROM A MANDREL July 8, 1947.

5 Sheets-Sheet 2 Original Filed July 10, 1943 J. CUTLER July 8, 1947;.

MECHANISM FOR EJECTING COMPLETED JACKETS FROM A MANDREL Original Filed July '10, 1943 5 Sheets-Sheet 5 3 wua/wbov,

(fa/005 Cullen July 8, 1947. J. CUTLER MECHANISM FOR EJECTING COMPLETED JACKETS FROM A MANDREL Original Filed July 10, 1943 5 Sheets-Sheet 4 .ln R E R \R gwue/n bo't, Jacob Cid/Zen J. CUTLER July 8, 1947.

MECHXNISM FOR EJECTING COMPLETED JACKETS FROM -A MANDREL Original Filed July 10, 1943 5 Sheets-Sheet 5 Patented July 8, 1947 MECHANISM FOR EJECTING COMPLETED JACKETS'FROM MANDRELS Jacob Cutler, Matapan, Mass, assignor to Maryland Baking Company, Inc., Baltimore, Md.,"a

corporation of Maryland Original application July 110, 1943, Serial No.

494,239. Divided and this application October '28, 1944, Serial No. 560,880

9 Claims.

My'invention relates to machines for folding paper blanks into conical form, sealing the overlapped edges together and ejecting-the finished cups orjackets from the .mandrel on which they are formed.

The invention'involved in the 'present'application has todo withthe ejection of the completed jackets from the mandrel and the present application is a'division of my original application filed July 10, 1943, Serial No. 494,239.

Primarily the; present invention has for an object to provide an ejecting mechanism which, While it may be founduseful in other machines, is especially adapted; for use in the completemachine for forming cone jackets which is iullydisclosed in my original-application aforesaid.

Other objects will in part be obvious and in part be pointed out. hereinafter.

To the attainment of the aforesaid objects and ends the invention still further resides in the novel details of construction, combination and arrangement of parts, all of which will be first fully described in the following-detailed description, and then bespecifically pointed out in the appended claims,'reference being bad to the-accompanying "drawings, in which:

Fig. 1 is a top plan view of the machine shown in-my aforesaid originalapplication and which embodies the present invention.

Fig. 2 is a side elevation thereof.

Fig. 3 is a vertical cross section, on an enlarged scale,taken on the line 3-3 ofFig. 1.

Fig. 4 is a cross section on the line 4-4 of Fig. 3.

Fig. 5 is an enlarged detail horizontal section of a portion of the machine taken on the line 55 of Fig. 6.

Fig. 6 is a'vertical section on the line 6-6 of Fig. 5.

Fig. 7 is a detail cross section taken on the lines 1-1 of Figs. 5 and 6.

Fig. 8 -isa detail cross sectionof a portion of the structure shown in Fig. 7 with the-parts shown in another position. 4

Fig. 9 is an enlarged detail elevation'of the one-way'clutch for driving the ejectingmechanism.

Fig. 10 is a detail view, partly in section, with the leaf spring I90 removed and parts shown in section. V

Figsyll and 12 are detail views of the cams and levers employed to efiect the operation of theejecting mechanism.

Fig. 13 is a detail elevation of a portion of the machine showing the'parts illustrated in Fig. 3

'2 but'looking at the "samezfromthe opposite side of the machine.

.In the drawings, in which like parts in all the figures areindicated by the same reference numerals,'the parts of the machine shown in the drawings have been'given the same numbers of reference as'thelike partsin the machine ofmy original application Serial No. 494,239-aforesaid.

In general the machine, in which my present invention is embodied, includes a supporting frame,= a drive motor, a vacuum pump, a' maga- Zine'for jacket blanks, :a glue-applying'device for applying glue or paste to the blanks, a means to fold the blanks around the 'mandreland cause the glue'to'stick the blank-together, and-the mechanism, which constitutes the subject matter of the'present application, for-stripping the jackets from the mandrel and discharging them from themachine.

The frame of themachine comprises vertical corner angle bars I, bottom'si'de and end angle bars 2, top ang-lebars .fiyintermediateside angle bars drvertical supports-5 and horizontal supports 6, 6 6, 6, 6

Mounted on thesupport 5 is-a driving-electric motor Land avacuum pump l I. The motor has a drive pulley-wand asmaller drive pulley Illsecured to itsshaft .8' (see Fig. 1) ,whilethepump shaft l2; carries :a large driven 'pulley .13. The pulleys-9 andrit are connected by a belt Hi, thereby constitutinga'reduction-speed drive for the pump. The small pulley I19 isconnected-by-a belt lTto a large pulley IGon-a-stub shaft P5. The pulley It issecuredto the stubrshaft l5.as is also a pinion l8 which meshes with a'mastergear 20 on .a cam shaft l9. The'cam shaft .isjournalled in suitable bearings 2 I Secured to the bars-4 is a transverse angle bar 23 (Figsll and 12),-.there being another-bar 23 mounted below=the upper" bar 23. Secured at suitable intervals to the bars 23'are verticalsupports'zd for the pivots255.ofthe several cam levers of themachine.

The machine includes operating cams-for the various mechanisms. The operating cams which effect the operation "of the ejecting mechanism thatconstitutes the-subject matter of the present application are best shown in Figs. 11 and 12, in which 33-indicates the throw-off belt raising and lowering cam, 35 the throw-off belt operating cam (which is directly 'behind'cam 33),.34 the belt raising'andlowering-cam-lever,'36 the throwo'ff-be'ltoperating camllever, 46 the blade operating cam, and 41 therbladeoperatingcamz lever. The cams: for the other mechanismaznotbeing a 3 part of the present application need not be described herein but are fully disclosed in my original application aforesaid.

48 indicates a base plate on which is mounted spaced standards 46 and 56 which carry plates 52 having angle guides 5| between which the slides 54 and 56 of the blank folding mechanism are mounted. The guide 54 carries the forked folding blade 55 while the slide 56 carries the roller-carrying plate 58 that is hinged at 51 and is spring pressed as at 59, 60.

The magazine for the blanks w is designated by 61 and the mandrel about which the blanks are folded is indicated by 16.

The mandrel 16, from which the completed jackets are removed by the mechanism that comprises the subject matter of the present application, has a longitudinal blade-receiving groove 12 in which a blade 16 slidably fits. The mandrel has a bore 13 from which ports 16 lead to atmosphere. The blade 16 is secured at its rear end to a carrier 11. The ends of the carrier pass through the slots in the vertical guides 15 and carry rollers 18 and collars 15. The blade 16 has holes 254 which register with certain of the ports 14 when the blade is drawn back. Lever arms 80 have forked ends that engage the rollers 18 and are secured to a shaft 8| that is journalled in bearings 82 that are secured to the cross bar 5|. An arm 81 forms, with the arms 80, a bellcrank lever. A connecting rod 88 connects the arm 81 with the cam lever 41, hereinbefore referred to.

The guides 15 are joined, at their forward ends, bya bridge 85 that carries an adjusting screw 86 for holding the blade 16 down in its groove 12. It will be noticed that the groove 12 does not extend to the apex or outer end of the mandrel 16, but tapers off about one-third the distance between the outer end of the mandrel and the bridge 85 (Figs. 5 and 6).

Therefore, when the blade 16 advances, it will ride up over the top of the tip end of the mandrel for a purpose soon made clear.

The blank transfer mechanism (which forms the subject matter of another divisional application) includes a transfer member 99 having converging arms IUI to receive a blank from the magazine 61 and convey it to the folding mechanism. The member 99 is carried on a bracket 98 attached to sliding carriage 9I that is operated at proper times by suitable mechanism not involved in this particular application but fully shown and described in my original application. The arms I III have suction apertures controlled by the valve I I9 that also controls the suction in the bore 13. In brief when the blank transfer member is under the magazine 61 (see dotted lines Fig. 6) suction is turned on and a blank caused to adhere to the arms IIII. The transfer member then carries the blank to a position beneath the mandrel, whereupon the suction in the arms IIII is turned off, suction is applied to the pipe I 40 to hold the blank to the folding head I33 by which the blank is raised to and partially folded about the mandrel (see Figs 6 and 7).

As soon as the conforming groove I38 of the head I 33 embraces the mandrel suction is broken in pipe I40 to release the blank therefrom. The head I33 is mounted on a vertically slidable rod I35 that is operated at the proper times by mechanism not a part of the subject matter of this application but which is fully disclosed in my original application aforesaid.

Mounted in suitable, bearings on the standards 55 is a shaft M5 on which is secured a grooved belt pulley I55 and on which is pivoted a pair of arms I49 whose free ends carry a shaft I 56. Connected arms I56 are pivoted to shaft I55 and in turn carry a shaft I65 on which is journaled a grooved pulley I58 (Figs. 3 and 13). A grooved pulley I51 is journaled to turn freely on shaft I55, which shaft is also free to be rocked in its bearings in arms I69. Arms I56, however, are secured to and turn with shaft I 56.

An arm I52 (Fig. 2) is also secured to shaft I56. A connecting rod I53 (made in two parts, slidably, and spring loaded as at I55, connected together) joins arm I52 to cam lever 34. A return spring I56 (Fig. 2) serves constantly to return pulley I56 to the full-line position in Fig. 2 (dotted-line position, Fig. 3) when cam lever 34 is disengaged by cam roller 35. Cam roller 35 is behind roller 33 and not visible in Fig. 11. A II-type belt I55 takes around pulleys I56, I51 and I55.

A belt tightener is provided to keep belt I66 taut. It comprises a pair of arms pivoted respectively to the arms I49 at I52 and carrying between them a grooved roller IIBI which rides on the belt I66 under pressure of the spring I63.

A pair of bars I66, adjustable and depending by links I61-I63 form arms I49, carry spaced, grooved, belt-engaging rollers I16 for engaging and holding straight the lower flight of belt I611.

The links I61 are pivoted at I 62, while the links I68 are slotted and secured by screws I69 to the arms I49.

Blocks I43 are adjustably secured to the uprights 50 on the opposing faces thereof and carry a shaft I41 on which is secured a grooved pulley I14 and a gear wheel I46 which meshes with a similar gear wheel I46 secured to shaft' I45 so that motion imparted to shaft I45 is transmitted to shaft I41.

Arms I1I are pivoted to shaft I61 and at their free ends carry a grooved pulley I13. An endless V-type belt I15 takes over pulleys I13, I14 and over a guide I16 whose bracket arms I11 are adjustably secured by screws I 18 to the arms I'II (Figs, 3 and 4), The upper flight of belt I15 is held up against the lower flight of belt I 60 by means of the spring I63 and a second spring I16 that connects an arm I69 with an arm IN. The pulley I13 lies below pulley I51, while arms I56 and pulley I58 overhang pulley I13.

Collars I5I on shaft I56 engage adjustable stop screws I35 secured to plates 52, for lining up the throw-off device with the mandrel.

The shaft I55 is turned at proper intervals by means of a one-way friction clutch device which will now be explained by reference, particularly, to Figs. 2, 9 and 10.

Secured to the shaft I 55 is a clutch wheel IBI having a lateral flange over which is loosely fitted the slotted ends of arms I85. The arms I84 have their inner ends resting in recesses I83 in a collar I 62 loose on shaft I55, the collar having an arm I6I that has a T-slot to receive the T,--block I62 to which is pivoted, at I63, the connecting rod I 94 that connects with the cam lever 36 (Fig. 11).

Each arm I84 carries a leaf spring I65. To the collar I62 is fastened rigid arms I86 having threaded slotted ends I 81 to receive the adjusting screws I68. Clamp screws I68 are provided for the split ends I61. A leaf-spring I66, held on the shaft by a collar I51, keeps the arms I86 in place (Fig. 9).

A bracket I55 supports a trough I into which the finished jackets are delivered,

The adhesive applying mechanism of the ma chine forms the subject matter of another divisional application and in the present drawings is indicated generally by the letter P and is driven by a sprocket and chain drive directly from shaft I9. As this mechanism is no part of the present application a description and detailed illustration. thereof has not been included herein. As soon as the jacket blank shall have been raised to and bent partly about the mandrel by the head, the blade 55 is advanced and as soon as the blade 55 has folded over the portion of the blank which it engages, the roller-carrying plate 56 moves the rollers 252 to the position of Fig. 8, the blade 55 being retracted as therollers advance. The adhesive having been applied to the blank the rollers effect a primary sealing of the overlaps of the blank and thus complete the formation of the jacket. As soon as the rollers recede, belt lfiil is brought down (Fig. 3) on the jacket; blade 15 is advanced to press the jacket seam against the belt and the belt is turned to strip the jacket from the mandrel, convey it to the place of discharge while holding the lapped parts together in cooperation with the belt l'a'fi until adhesion has been completed; the belts throw off the jackets into the trough I96.

From the foregoing description taken with the accompanying drawings it is thought the complete construction, combination and arrangement of parts will be clear to those skilled in the art to which it appertains.

What I claim is;

1. In a jacket forming machine wherein is provided a magazine for a stack of flat blanks, a distant mandrel on which the jackets are formed, and means for molding the blanks about the mandrel and overlapping the sides of the blanks and causing adhesion between the overlapped parts; a mandrel comprising a shank and a conical body, said body having a longitudinal groove in its face, a blade fitting said groove, means to advance and retract said blade along said groove, means to raise the advance end of the movable blade, and means cooperating with said blade to strip the jackets from the mandrel.

2. In a machine of the character described: a support; a mandrel secured to said support and extending beyond the same; said mandrel having a suction bore and a longitudinal groove having ports communicating with said bore; a blade in said groove, said blade having ports; a blade carrier to which said blade is secured; slotted guides in which said carrier is mounted; means to move said carrier forth and back in said guides to move the blade along said groove; a blade presser mounted on said guides to engage said blade; said mandrel having means to raise the advance end of said blade as it leaves the groove in its course of movement; and jacket throw-off means cooperative with said blade to remove the jackets from the mandrel.

3. The machine of claim 2 in which the jacket throw-off means comprises an upper and a lower endless belt, said belts having flights running in contact one with the other, one of said belts having an extension adapted to overlie the mandrel to co-operate with said blade; means to lift and lower the said extension from and to the mandrel; and means to drive the belts,

4. In a machine for forming tubular jackets on a mandrel; a mandrel having a longitudinal groove in its face, said groove terminating short of the end of the mandrel; a blade located in and longitudinally slidable along said groove; means to slide the blade forth and back along the groove and over the ungrooved end ofthe mandrel; in combination with a jacket throw-off mechanism co-operative with the blade for removing jackets from the mandrel.

5. In a machine for forming tubular jackets on a mandrel; a mandrel having a longitudinal groove in its face, said groove terminating short of'the end of the mandrel; a blade located in said groove and longitudinally slidable in the same; means to slide the blade forth and back along the groove and over the ungrooved end of the mandrel; combined with a jacket throw-off mechanism cooperative with the blade for removing jackets from the mandrel, said mechanism including-an upper endless belt and pulleys around which said belt passes, said pulleys including a drive pulley and idler pulleys; a second endless belt located beneath the upper endless belt, said belts having their adjacent flights in close proximity, the lower belt extending away from the end of the mandrel, the upper belt having an extension that projects over the mandrel and blade, and means for lowering and raising said extended portion to and from the mandrel.

6. In a machine of the class described: a mandrel on which blanks are formed, combined with means to remove finished jackets from the mandrel while maintaining their lapped seams under pressure contact, said removing means comprising a support, a first driving shaft mounted in bearings on said support, means for turning said driving shaft, a driving pulley on said shaft, arms pivoted on said first driving shaft and carrying a second shaft, an idler on said second shaft, arms pivoted to said second shaft, an idler pulley journaled on said arms, an endless belt passing over said pulleys, a belt tightener pivoted to the first mentioned arms and aving a pulley engaging said belt, a spring connected to said tightener to press its pulley against said belt to take up slack, a second driving shaft carried by said support and gear connected to said first driving shaft, arms pivoted to said second driving shaft, an idler pulley journaled on said last named arms, a second endless belt passing around the last named pulley and the pulley on said second driving shaft, said belts having contacting flights extending the length of the first and last mentioned arms, means to move the arms which are pivoted to the shaft that is carried by the first mentioned arms on said shaft as a pivot to raise and lower the third mentioned pulley from and to the mandrel, and means yieldably urging the second and fifth mentioned pulleys toward one another.

'7. In a machine of the class described: a mandrel on which blanks are formed, combined with means to remove finished jackets from the mandrel while maintaining their lapped seams under pressure contact, said removing means comprising a support, a first driving shaft mounted in bearings on said support, means for turning said driving shaft, a driving pulley on said shaft, arms pivoted on said first driving shaft carrying a second shaft, an idler on said second shaft, arms pivoted to said second shaft, an idler pulley journeled on said arms, an endless belt passing over said pulleys, a belt tightener pivoted to the first mentioned arms and having a pulley engaging said belt, a spring connected to said tightener to press its pulley against said belt to take up slack, a second driving shaft carried by said support and gear connected to said first driving shaft, arms pivoted to said second driving shaft, an idler pulley journaled on said last named arms, a second endless belt passing around the last named. pulley and the pulley on said second driving shaft, said belts having contacting flights extending the length of the first and last mentioned arms, means to move the arms which are pivoted to the shaft that is carried by the first mentioned arms on said shaft as a pivot to raise and lower the third mentioned pulley from and to the mandrel, and means yieldably urging the second and fifth mentioned pulleys toward one another, means carried by the arms which are pivoted to the second driving shaft for supporting that flight of the second belt which lies adjacent the first belt, means for supporting the flight of the first belt against that of the second belt, and means for supporting said second mentioned shaft so as to position the belts properly with respect to the mandrel.

8. In a machine of the character described wherein is provided a support, a mandrel secured to said support and means to form a jacket on said mandrel: the improvement which includes a blade in a groove in the face of the mandrel;

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,095,775 Von Hoffe et a1 Oct. 12, 1937 2,028,163 Novick Jan. 21, 1936 2,119,478 Wood Mar. 8, 1938 

